Effects of wax on CH4 hydrate formation and agglomeration in oil-water emulsions
The solid sediments, resulted from hydrate formation and wax crystallization in crude oil, may generate catastrophic blockage in the pipeline under adverse conditions; this poses a formidable threat to the transportation of deep-sea crude oil. To shed light on the mechanism of the effects of waxes a...
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Online Access: | http://ir.giec.ac.cn/handle/344007/36605 http://ir.giec.ac.cn/handle/344007/36606 https://doi.org/10.1016/j.fuel.2022.124128 |
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ftchacadsciegiec:oai:ir.giec.ac.cn:344007/36606 2023-12-24T10:18:33+01:00 Effects of wax on CH4 hydrate formation and agglomeration in oil-water emulsions Liu, Jia Wang, Jing Dong, Ti Liang, Deqing 2022-08-15 http://ir.giec.ac.cn/handle/344007/36605 http://ir.giec.ac.cn/handle/344007/36606 https://doi.org/10.1016/j.fuel.2022.124128 英语 eng ELSEVIER SCI LTD FUEL http://ir.giec.ac.cn/handle/344007/36605 http://ir.giec.ac.cn/handle/344007/36606 doi:10.1016/j.fuel.2022.124128 Hydrate Wax crystals Nucleation Hydrate growth Aggregation METHANE HYDRATE ANTI-AGGLOMERANT INDUCTION TIME MECHANISM INSIGHTS GROWTH SLURRY MODEL Energy & Fuels Engineering Chemical 期刊论文 2022 ftchacadsciegiec https://doi.org/10.1016/j.fuel.2022.124128 2023-11-24T01:15:48Z The solid sediments, resulted from hydrate formation and wax crystallization in crude oil, may generate catastrophic blockage in the pipeline under adverse conditions; this poses a formidable threat to the transportation of deep-sea crude oil. To shed light on the mechanism of the effects of waxes and hydrates in deep-sea crude oil under coexisting conditions, this work systematically investigates the effects of wax crystal precipitation and hydrate formation time-series on hydrate nucleation, growth, aggregation, and crystal structure in oil-water emulsions through experiments. Research results demonstrate that the time sequence of wax crystal precipitation and hydrate formation is concerned with the possibility of significant solid deposit formation; when wax crystal precipitation precedes hydrate formation, the wax crystals inhibit hydrate nucleation and growth; conversely, when hydrate formation precedes wax crystal precipitation, the wax significantly reduces hydrate particle aggregation, which in turn improves the flow characteristics of the hydrate slurry. Additionally, the microscopic analysis further reveals that the presence of wax has no effect on the crystal structure of CH4 hydrate, yet it has a significant effect on the distribution of CH4 in the cavities, i.e. it reduces the occupancy of large cages. Report Methane hydrate Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR Fuel 322 124128 |
institution |
Open Polar |
collection |
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR |
op_collection_id |
ftchacadsciegiec |
language |
English |
topic |
Hydrate Wax crystals Nucleation Hydrate growth Aggregation METHANE HYDRATE ANTI-AGGLOMERANT INDUCTION TIME MECHANISM INSIGHTS GROWTH SLURRY MODEL Energy & Fuels Engineering Chemical |
spellingShingle |
Hydrate Wax crystals Nucleation Hydrate growth Aggregation METHANE HYDRATE ANTI-AGGLOMERANT INDUCTION TIME MECHANISM INSIGHTS GROWTH SLURRY MODEL Energy & Fuels Engineering Chemical Liu, Jia Wang, Jing Dong, Ti Liang, Deqing Effects of wax on CH4 hydrate formation and agglomeration in oil-water emulsions |
topic_facet |
Hydrate Wax crystals Nucleation Hydrate growth Aggregation METHANE HYDRATE ANTI-AGGLOMERANT INDUCTION TIME MECHANISM INSIGHTS GROWTH SLURRY MODEL Energy & Fuels Engineering Chemical |
description |
The solid sediments, resulted from hydrate formation and wax crystallization in crude oil, may generate catastrophic blockage in the pipeline under adverse conditions; this poses a formidable threat to the transportation of deep-sea crude oil. To shed light on the mechanism of the effects of waxes and hydrates in deep-sea crude oil under coexisting conditions, this work systematically investigates the effects of wax crystal precipitation and hydrate formation time-series on hydrate nucleation, growth, aggregation, and crystal structure in oil-water emulsions through experiments. Research results demonstrate that the time sequence of wax crystal precipitation and hydrate formation is concerned with the possibility of significant solid deposit formation; when wax crystal precipitation precedes hydrate formation, the wax crystals inhibit hydrate nucleation and growth; conversely, when hydrate formation precedes wax crystal precipitation, the wax significantly reduces hydrate particle aggregation, which in turn improves the flow characteristics of the hydrate slurry. Additionally, the microscopic analysis further reveals that the presence of wax has no effect on the crystal structure of CH4 hydrate, yet it has a significant effect on the distribution of CH4 in the cavities, i.e. it reduces the occupancy of large cages. |
format |
Report |
author |
Liu, Jia Wang, Jing Dong, Ti Liang, Deqing |
author_facet |
Liu, Jia Wang, Jing Dong, Ti Liang, Deqing |
author_sort |
Liu, Jia |
title |
Effects of wax on CH4 hydrate formation and agglomeration in oil-water emulsions |
title_short |
Effects of wax on CH4 hydrate formation and agglomeration in oil-water emulsions |
title_full |
Effects of wax on CH4 hydrate formation and agglomeration in oil-water emulsions |
title_fullStr |
Effects of wax on CH4 hydrate formation and agglomeration in oil-water emulsions |
title_full_unstemmed |
Effects of wax on CH4 hydrate formation and agglomeration in oil-water emulsions |
title_sort |
effects of wax on ch4 hydrate formation and agglomeration in oil-water emulsions |
publisher |
ELSEVIER SCI LTD |
publishDate |
2022 |
url |
http://ir.giec.ac.cn/handle/344007/36605 http://ir.giec.ac.cn/handle/344007/36606 https://doi.org/10.1016/j.fuel.2022.124128 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
FUEL http://ir.giec.ac.cn/handle/344007/36605 http://ir.giec.ac.cn/handle/344007/36606 doi:10.1016/j.fuel.2022.124128 |
op_doi |
https://doi.org/10.1016/j.fuel.2022.124128 |
container_title |
Fuel |
container_volume |
322 |
container_start_page |
124128 |
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1786207600604348416 |